Need help with understanding parts

thank you for any help.
I am looking at building an plastic extrusion, but not sure of the heat coil or controller, been looking on eBay but not sure if I’m looking at the right parts.
electrical is not my strongest thing, I always get a good charge out of it, so I’m trying to stay away from the hart boost .lol

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check for “band heater” and “PID controller”.

Ok thanks,well I looked and I have no idea what I need I’m using a 1″
Barrel inside measurement!
Not sure on volt and watts that is needed. And what controller is best
I’m good in the assemble it just don’t do well in understand electrical, but I know not to lick your Finger on a live wire!
Again thanks for the help